Bobbin support for looms



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' W. J. H. MURRAY BOBBN SUPFORT FOR LOOMS 31a/new? oL: W.J.H.MUR RAY,

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Aug. 25, 1925.

w. J. H. MURRAY BoBBIN SUPPORT FOR Looms Filed Feb. 27, 1924 E Sheets-Sheet 2 FIC-3.6.

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@Hm m21 Patented Aug. 25, 1925.

UNITE STATES WILLIAM J. H. MURRAY, OIE" GLENDALE, SOUTI-I CAROLINA.

BOIBBIN SUPPORT FOR LOOMS.

Application filed February 27, 1924. Serial N10. 695,541.

To. all whom it may concern.'

Be it known that I, WILLIAM J. H. MUR- RAY, a citizen of the United States, residing at Glendale, in the county of Spartanburg and State of South Carolina, have invented certain new and useful Improvements in Bobbin Supports for Looms, of which the following is a' specification, reference being had therein to the accompanying drawing.

The present invention relates to bobbin supports used in lling-changing motions for looms, and the primary object of the invention is the provision of a novel and improved bobbin support which will eliminate a number of objections to and deficiencies in bobbin supports that are now in use.

The present loom support is intended especially for the well-known Northrop loom, although it can be used in other looms for which it is suitable. The ordinary bobbin supports of such looms are a source of trouble and expense because of damwage to bobbins, shuttles, boX p-`l-atkeswilftlifrp,arts, as vv'elxwwcaisingwaiip b M, M, wf, flllleaboin eilpreperly...delivered tohthhemshuttl In such looms, when the transfer hammer starts its downward swing to deliver a bobbin of iilling to the shuttle, the tension of the ratchet motion releases the hopper, so that the hopper is free to revolve backward enough whereby the bobbin that is being delivered to the shuttle may be out of proper position. Continualoperation of the loom will cause parts of the filling-changing device to wear, thereby resulting in lost motion, and such lost motion will enable the hopper to kick back, resulting in broken bobbin supports, damage to bobbins, shuttles and boX plates, and warp breakouts.

It is an object of the invention to overcome such diiiiculties by` the provision of a bobbin support of novel construction or formation which will operate to prevent the hopper from kicking or turning backward while a bobbin is being delivered, to assure of the proper delivery of the bobbin. This will also eliminate undue wear and tear on the bobbins and parts of the filling-changing device.

With the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein- Figure 1 is a sectional view through a portion of a Northrop loom illustrating the fillingchanging motion, and showing the bobbin support in supporting position in full lines, and back stop position in dotted lines.

Fig. 2 is an enlarged plan View of the improved bobbin support and its pintle and frame.

Fig. 3 is an enlarged sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a section on the line 4-4 of Fig. 2.

There is illustrated in the drawings the pertinent portion of a Northrop loom, for depicting the application and operation of the bobbin support. The filling-changing motin'eomprises the inner head 11 and the outer head 12 between which the bobbins 13 are supported, each bobbin having the usual butt 14 to seat in a recess 15 formed in the periphery of the head 11, and the usual nose or tip 16 which is engaged by a spring retainer 17 upon the head 12. The heads 11 and 12 have annular series of the recesses 15 and retainers 17, respectively, so that a considerable number of filled bobbins may be supported between the heads comprising the hopper of the illing-changing device. The butts 14 of the bobbins are retained within the recesses 15 by an arcuate flange 18 of the frame, which flange extends across the recesses 15 for holding the butts 14 there in, said flange terminating at the throat 2O through which the bobbins are delivered from the hopper. A bobbin guide 21 is supported by the frame at that side of the throat 20 opposite to the end of the flange 18, for directing the bobbin downwardly into the shuttle 22. As usual, a bobbin delivered into the shuttle 22 serves to displace the empty or partially emptv bobbin from the shuttle, such empty bobbin dropping down through a chute 23 into the receptacle 24 for receiving the discharged bobbins. The bobbin which is beyond the end of the flange 18 is delivered from the hopper by a transfer hammer 25 having the usual fork connection 26, so that when the hammer swings downwardly, the bobbin which is over the shuttle is forced down through the throat 20. The hammer 25 is actuated in the usual manner through the coaction of the bunter 27 with the latch finger 28 which is connected to the hammer 25, and said hammer carries the usual bow 29 for coaction with the ratchet motion, whereby the hopper is advanced one step, after the hammer has moved downwardly and upwardly, to bring the next bobbin into position for delivery.

A pintle 32 is engaged through the frame 33 below the end portion of the flange 18, and a nut 34 is threaded on said pintle for securing it to the frame. A washer 35 is fitted on the pintle to bear against the frame 33 for the contact of the bobbin support 36 which forms the gist of the present invention.

The bobbin support 36, as shown, is conveniently formed from a sheet metal plate or strip, which is doubled upon itself, and said support has the opposite leaves or wings 37 and 38. The portions of the plate between the wings 37 and 38 are ofl'set away from one another to form a sleeve 39 which is slipped on the pintle 32 to mount the support for oscillation on said pintle, with one end of the sleeve 39 bearing against the washer 35 under the head 11. The wing 37 projects beyond the end of the flange 18 so as to support the butt 14 of the bobbin which is over the throat 20, and the wing or arm 38 of the support has means for stopping the backward kicking or reverse rotation of the hopper. Thus, said wing or arm 38 has an upwardly curved finger or hook 40 which is so arranged as to swing upwardly behind and contact with the butt 14 of one of the other bobbins in rear of the bobbin which is being delivered, as indicated in dotted lines in Fig. 1. The finger or hook 40 is offset, leaving the notch or recess 41 to accommodate the flange 18 and head 11 when the support is swung by the delivery of a bobbin from the hopper, and the portions of the plate from which the bobbin support is formed are secured together by any suitable means, such as a rivet 42 engaged through the wing or arm 38. As shown, the ends of the plate or strip from which the support is formed are at the end or tip of the hook or finger 40.

The. wing 38 has an aperture 43 for the connection of the spring 44 which normally holds the support in supporting position. The coil spring 44 surrounds the pintle 32 and has a terminal portion 45 to extend over the wing 38, said terminal portion 45 having the hook 46 to engage down through the aperture 43. The opposite terminal portion 47 of the spring is disposed diametricallyof the spring to extend through a diametrical opening 48 provided in the pintle 32. Said pintle has an oblique slot 49 extending from the opening 48 to the periphery of the pintle, for the insertion and removal of the terminal portion 47 of the spring. The spring can thus be anchored to the pintle without using a securing element on the pintle.

The end portion of the pintle 32 beyond the slot 49 and opening 48 is of square or angular cross-section for the'engagement of a wrench, as at 50.

The wing 37 of the bobbin support will yieldingly support the heel or butt 14 of the bobbin which is over the throat 20, and when such bobbin is forced downwardly by the hammer or transfer member 25, the wing 37 is swung downwardly. This motion of the support will swing the finger or hook 40 upwardly behind and in contact with the heel or butt 14 of 4one of the bobbins following the delivered bobbin (the second bobbin from the delivered bobbin as shown). Consequently, the finger or hook 40 serves as a back stop to prevent the hopper from kicking or rotating backwardly during the delivery of the bobbin from the hopper. This back stop action will always occur when there are at least three bobbins in the hopper, and even though the parts of the filling-changing device are worn and have lost motion. When the bobbin has been delivered into the shuttle 22, the support is released, and the spring 44 will return the support to normal position, the wing 37 being raised to support the next bobbin, and the hook or finger 40 being retracted so as not to interfere with the advance motion of the hopper.

The bobbin support, instead of being fashioned from sheet metal, can be a metal casting. or can be of other suitable construction.

Having thus described the invention, what is claimed as new is 1. The combination in a loom, of a fillingchanging device having a rotatable bobbin hopper, and a movable bobbin support for supporting the bobbin in the hopper to be delivered therefrom and arranged to be moved when said bobbin is delivered from the hopper, and a back stop portion connected to said support to be moved simultaneously therewith and arranged to prevent the reverse rotation of said hopper when the support is moved by the delivered bobbin.

2. The combination in aloom, of a fillingchanging device having a rotatable bobbin hopper, and a movable bobbin support for supporting the bobbin in the hopper to be delivered therefrom and moved by said bobbin when it is delivered, and a back stop portion connected to said support to be moved simultaneously therewith and arranged to engage behind another bobbin in said hopper when said support is moved by the delivered bobbin to prevent reverse rotaion of said hopper.

3. The combination in a loom, of a fillingchanging device having a rotatable bobbin hopper, and an oscillatory bobbin support for supporting the bobbin in the hopper to be delivered therefrom, said support having a back stop portion arranged to prevent the reverse rotation of said hopper when the support is swung by the delivery of said bobbin from the hopper.

4. The combination in a loom, of a fillingohanging device having a rotatable bobbin hopper, and an oscillatory bobbin support arranged to suppor-t the bobbin in the hopper to be delivered therefrom, .said support having a finger to swing behind another bobbin in said hopper when the support is swung by the delivery of the irstnamed bobbin from the hopper.

5. The combination in a loom, of a fillingchanging device having' a rotatable bobbin hopper, and a bobbin support mounted for oscillatory movement between the ends thereof, said support having a portion at one end for supporting the bobbin in the hopper to be delivered therefrom, and said support having a back stop portion at its other end arranged to prevent the reverse rotation of the hop-per when the iirstnamed portion is swung by the delivery of said bobbin from the hopper.

6. The combination in a loom, of a fillingchanging device having a rotatable bobbin hopper, a pintle, a bobbin support having opposite wings and a Sleeve between the wings mounted for rotation on the pintle, one wing of the support being arranged to support the bobbin in the hopper to be delivered therefrom, the other wing of the support having a finger to engage behind another bobbin in the hopper when the firstnamed wing is swung by *the delivery of the irstnamed bobbin from the hopper, and spring means for restoring the bobbin support.

In testimony whereof I hereunto ax my signature.

WILLIAM J. H. MURRAY. 

